You're twisting your own argument. Your previous post argued that if you can cap haste with Twilight, Twilight is better. You can't cap haste with Twilight without altering other slots, because 7 is not equal to 12, and the Tantra set does not overkill enough to compensate for that.

However, if you want to make it a straight one-to-one, belt-to-belt comparison, the argument becomes 5haste 5str vs 2DA. BB wins again, no question.

Again, the distinction between 'tanking' and 'DDing' does not exist.